Li Fenglin, professor of China Geological University introduces to visitors the fossil bones of a pregnant hornless rhinoceros at the National Geological Park in Linqu County, east China's Shandong Province, Sept. 29, 2005. This rare fossil considered to be 18 million years old was excavated at a former volcano site full of ancient species' traces in Linqu. The mother-to-be rhinoceros, measured 2.7 meters long and 1.7 meters high, was said to be the first of its kind so far discovered in the world.